Radiant|Natural|GIA

1.01ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 2557812240

Certificate GIA 2557812240

Diamond specifications and retailer prices

From €2,129 EUR
$2,378 USD
As of October 31, 2026
Save €2,185 EUR (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,121 EUR at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.01ct natural radiant diamond

This 1.01ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557812240. Listed at 16 retailers as of October 29, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle52.31°
Pavilion angle30.09°
OriginNatural
Grading LabGIA
CertificateGIA 2557812240
Dimensions4.69 × 7.12 × 3.22 mm
L/W Ratio1.52
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot, Feather, Needle
Top View
4.69 mm7.12 mm1.01 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557812240
Side View
Table 67.0%Crown 52.31°Girdle: STK-THKPavilion 30.09°Culet: NoneDepth 68.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €2,503 EUR|Low: €1,765 EUR|High: €4,344 EUR|Avg: €2,589 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5€2,129 EUR
Retailer 6€2,193 EUR
Retailer 3€2,197 EUR
Retailer 8€2,248 EUR
Retailer 2€2,373 EUR
Retailer 10€2,449 EUR
Retailer 1€2,503 EUR
Retailer 4€2,540 EUR
Retailer 9€2,744 EUR
Retailer 7€4,314 EUR

44 data points across 10 retailers

16 retailers€2,129 EUR to €4,314 EUR

A
Cheapest Retailer
-
€2,129 EUR
$2,378 USD
A
Retailer 2
-
€2,193 EUR
$2,450 USD
View
Final sale: no returns
A
Retailer 3
-
€2,197 EUR
$2,455 USD
View
A
Retailer 4
-
€2,248 EUR
$2,511 USD
View
A
Retailer 5
-
€2,373 EUR
A$4,078 AUD
View
Retailer 6
-
€2,449 EUR
$2,736 USD
View
Price last confirmed 31 days ago
Retailer 7
-
€2,449 EUR
$2,736 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
€2,503 EUR
$2,796 USD
View
A
Retailer 9
-
€2,540 EUR
£2,235 GBP
View
Retailer 10
-
€2,544 EUR
$2,842 USD
View
Price last confirmed 31 days ago
Retailer 11
-
€2,744 EUR
A$4,717 AUD
View
Price last confirmed 24 days ago
Retailer 12
-
€2,826 EUR
$3,157 USD
View
Price last confirmed 55 days ago
Retailer 13
-
€2,826 EUR
$3,157 USD
View
Price last confirmed 33 days ago
Retailer 14
-
€2,826 EUR
$3,157 USD
View
Price last confirmed 47 days ago
B
Retailer 15
-
€4,314 EUR
£3,795 GBP
View
Most Expensive
NZ Jewellers
8745b152-c77d-4b17-94a5-a33cef344093 · Sep 30
€5,121 EUR
$5,721 USD
View
Price last confirmed 32 days ago
15 more retailers have this diamond
Prices start from €2,129 EURSave up to €2,185 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.01ct Radiant
€2,129 EUR